FBI agents last month raided the home of the CEO of a bankrupt hospital chain and one of its hospitals in Pennsylvania in new signs of trouble for a company central to accusations of influence-peddling by James Biden, brother of former Vice President Joe Biden. The federal investigation was disclosed in documents filed this month by the acting U.S. trustee overseeing the bankruptcy case of Florida-based Americore Holdings, which is in the business of acquiring and managing rural hospitals. The filing in Kentucky by the federal trustee, Paul A. Randolph, seeks the appointment of a trustee specifically to oversee the...